EP3036518A1 - Pico-prüfleck - Google Patents
Pico-prüfleckInfo
- Publication number
- EP3036518A1 EP3036518A1 EP14750496.3A EP14750496A EP3036518A1 EP 3036518 A1 EP3036518 A1 EP 3036518A1 EP 14750496 A EP14750496 A EP 14750496A EP 3036518 A1 EP3036518 A1 EP 3036518A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- prüfleckvorrichtung
- container
- capillary
- gas
- ppm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/007—Leak detector calibration, standard leaks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/207—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material calibration arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1493—Details
- F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/007—Arrangements to check the analyser
Definitions
- the invention relates to atician for testing and calibrating a gas leak detector.
- Test leaks have a housing filled with a test gas and are provided with a leak having a predetermined, known leakage rate through which the test gas penetrates to the outside.
- the operability or accuracy of a gas leak detector can be tested by measuring the gas leaving the test leak.
- EP 0742894 Bl describes a capillary provided with a test leak, which has a comparatively low leakage rate of 10 "7 mbarl / s or more achieved.
- Such capillaries can not be made arbitrarily small because they are otherwise clogged by humidity and unusable.
- With the known test leaks it has hitherto been impossible to produce leakage rates of 10 "12 mbarl / s or less. Such leakage rates are required to test Leak detectors for very small leaks.
- the invention has for its object to provide a scholarleck with a low leakage rate in the range of 10 "12 mbarl / s.
- the educaleckvortechnische invention is defined by the features of claim 1.
- Theticianleckvoroplasty invention has a filled with a gas that consists of at least 10% of atmospheric air filled container.
- the remaining portion of the gas may be, for example, nitrogen.
- the container wall is penetrated by at least one capillary.
- the capillary should a leak rate in the range of about 10 "5 to 10" 7 mbarl / s and preferably from about 10 "6 mbarl / s have.
- Atmospheric air does not lead to clogging of the capillary and typically has a proportion of helium and a proportion of Helium and argon are typical test gases in gas leak detection and the amount of helium in the air contained in the container should be in the range of between three and seven ppm and preferably about 3.5 to 5.5 ppm By “about”, it is meant in each case a deviation of ⁇ 10% in the present description
- the argon content of the air contained in the container should be in the range of 0.1 to 2% and preferably about 0.8 to 1, 2%. A particularly advantageous proportion of argon is about 1%.
- the container is a cylinder with an end cover or an end cap.
- the forehead cap is penetrated by the capillary.
- the cylinder should not exceed a length of 5 cm and a diameter of about 1 cm.
- the capillary can be guided inside the cylinder along its central longitudinal axis.
- the container made of glass and the end cap made of a metal can also be used in particularly small test chambers and filled in a simple manner. Filling is done simply by removing the end cap and allowing the gas to flow into the container with the atmospheric air.
- the cylindrical sketchleck employer has a small surface area and is due to lack of gaps or wells easy to evacuate in a test chamber.
- the gas in the container should have a relative humidity of less than 50% and preferably less than 40% in order to avoid clogging of the capillary due to atmospheric moisture.
- FIG. 1 shows a longitudinal section through theticianleckvorraum.
- the educaleckvorutter 10 consists of a cylindrical container 12 made of glass with a closed bottom 14 on one end face and an open end on the opposite end face. The open end is sealingly closed with a front cap 16 made of metal. Through the metal cap 16, a capillary 18 is guided along the central longitudinal axis of the cylinder 12.
- the container 12 is filled with atmospheric air 20 having a helium content of 5 ppm and an argon content of 1%.
- the capillary 18 has a leak rate of 10 "6 mbarl / s.
- the humidity of the air is 40%.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013216450.5A DE102013216450A1 (de) | 2013-08-20 | 2013-08-20 | Pico-Prüfleck |
| PCT/EP2014/067309 WO2015024831A1 (de) | 2013-08-20 | 2014-08-13 | Pico-prüfleck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3036518A1 true EP3036518A1 (de) | 2016-06-29 |
| EP3036518B1 EP3036518B1 (de) | 2018-10-10 |
Family
ID=51302992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14750496.3A Active EP3036518B1 (de) | 2013-08-20 | 2014-08-13 | Pico-prüfleck |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9933325B2 (de) |
| EP (1) | EP3036518B1 (de) |
| JP (2) | JP2016528509A (de) |
| CN (1) | CN105531573B (de) |
| DE (1) | DE102013216450A1 (de) |
| WO (1) | WO2015024831A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013216450A1 (de) * | 2013-08-20 | 2015-02-26 | Inficon Gmbh | Pico-Prüfleck |
| WO2018181105A1 (ja) * | 2017-03-31 | 2018-10-04 | 芝浦メカトロニクス株式会社 | ヒータ管の気体リーク検出装置及びヒータ管の気体リーク検出方法 |
| CN107314867A (zh) * | 2017-06-30 | 2017-11-03 | 徐校竹 | 一种漏水检测装置 |
| DE102020100830A1 (de) * | 2020-01-15 | 2021-07-15 | Inficon Gmbh | Prüfgasapplikator |
Family Cites Families (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5940137A (ja) * | 1982-08-30 | 1984-03-05 | Shimadzu Corp | リ−クテスト装置 |
| EP0110004B1 (de) | 1982-11-26 | 1987-08-12 | Leybold Aktiengesellschaft | Testleck |
| DE3243752A1 (de) * | 1982-11-26 | 1984-05-30 | Leybold-Heraeus GmbH, 5000 Köln | Testleck |
| DE3613694A1 (de) | 1986-04-23 | 1987-10-29 | Leybold Heraeus Gmbh & Co Kg | Vorrichtung zur kalibrierung des detektors eines lecksuchgeraetes |
| IT1224604B (it) * | 1988-07-27 | 1990-10-04 | Varian Spa | Rivelatore perfezionato di perdite di elio |
| DE4038266A1 (de) * | 1990-11-30 | 1992-06-04 | Siemens Ag | Verfahren und vorrichtung zur pruefung der gasdichtigkeit von bauteilen, insbesondere sf(pfeil abwaerts)6(pfeil abwaerts)-dichtigkeit von kondensatoren |
| JP2625342B2 (ja) * | 1993-01-06 | 1997-07-02 | 日本電信電話株式会社 | 質量分析型ガス漏れ検知器に適用されるガス濃度校正法及び校正器具 |
| US5663487A (en) | 1994-02-02 | 1997-09-02 | Leybold Aktiengesellschaft | Capillary tube determining the leakage rate for a test leak |
| SE502355C2 (sv) * | 1994-02-17 | 1995-10-09 | Hans Stymne | Sätt jämte anordning för att avge små mängder gas från ett ämne i kondenserad form till omgivningen med kontrollerbar hastighet |
| US5417105A (en) * | 1994-02-18 | 1995-05-23 | Hughes Aircraft Company | Flow accelerator for leak detector probe |
| JP3897860B2 (ja) * | 1997-07-11 | 2007-03-28 | 株式会社アルバック | 密閉品のリークテスト方法 |
| WO1999022215A1 (en) * | 1997-10-29 | 1999-05-06 | Stant Manufacturing Inc. | Hand-held fuel cap leakage tester |
| DE19906941A1 (de) * | 1999-02-19 | 2000-08-24 | Leybold Vakuum Gmbh | Testleck |
| JP2004340721A (ja) * | 2003-05-15 | 2004-12-02 | Ulvac Japan Ltd | 液晶パネルの封止検査方法 |
| DE10353033A1 (de) * | 2003-11-13 | 2005-06-09 | Inficon Gmbh | Verfahren zum Betrieb eines Wasserstoff-Testlecks |
| ATE488757T1 (de) * | 2004-09-17 | 2010-12-15 | Ronald Douglas Collins | Referenz-gasleck |
| CN100462706C (zh) * | 2005-01-06 | 2009-02-18 | 清华大学 | 标准漏孔 |
| DE102005009713A1 (de) * | 2005-03-03 | 2006-09-07 | Inficon Gmbh | Lecksuchgerät mit Schnüffelsonde |
| JP4628193B2 (ja) * | 2005-06-13 | 2011-02-09 | 旭化成ホームズ株式会社 | トレーサーガスの放散方法及び放散容器 |
| DE102005028557A1 (de) * | 2005-06-21 | 2007-01-04 | Inficon Gmbh | Verfahren zum Kalibrieren eines spektrometrischen Schnüffellecksuchers |
| DE102006016747A1 (de) | 2006-04-10 | 2007-10-18 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Verfahren und Vorrichtung zur Leckprüfung |
| DE102009012213A1 (de) | 2009-03-07 | 2010-09-09 | Inficon Gmbh | Testleck |
| CN201749007U (zh) * | 2010-08-12 | 2011-02-16 | 爱发科东方真空(成都)有限公司 | 标准漏孔 |
| DE102010050505A1 (de) * | 2010-11-08 | 2012-05-10 | Fogtec Brandschutz Gmbh & Co. Kg | Dichtheitsprüfung von Rohrleitungssystem für Brandbekämpfungsanlagen |
| CN202836897U (zh) * | 2012-10-24 | 2013-03-27 | 爱发科东方真空(成都)有限公司 | 检漏仪用内部校准漏孔 |
| DE102012220108A1 (de) * | 2012-11-05 | 2014-05-22 | Inficon Gmbh | Verfahren zur Prüfung einer Dichtheitsprüfanlage |
| EP2954308B1 (de) * | 2013-02-08 | 2019-05-22 | Services Petroliers Schlumberger | Verfahren zur messung der eigenschaften von mikroporösem material in mehreren massstäben |
| DE102013216450A1 (de) * | 2013-08-20 | 2015-02-26 | Inficon Gmbh | Pico-Prüfleck |
-
2013
- 2013-08-20 DE DE102013216450.5A patent/DE102013216450A1/de not_active Withdrawn
-
2014
- 2014-08-13 US US14/911,872 patent/US9933325B2/en active Active
- 2014-08-13 CN CN201480045282.5A patent/CN105531573B/zh active Active
- 2014-08-13 JP JP2016535419A patent/JP2016528509A/ja active Pending
- 2014-08-13 EP EP14750496.3A patent/EP3036518B1/de active Active
- 2014-08-13 WO PCT/EP2014/067309 patent/WO2015024831A1/de not_active Ceased
-
2018
- 2018-12-19 JP JP2018236925A patent/JP6722750B2/ja active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2015024831A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US9933325B2 (en) | 2018-04-03 |
| US20160195448A1 (en) | 2016-07-07 |
| CN105531573B (zh) | 2019-01-15 |
| JP6722750B2 (ja) | 2020-07-15 |
| EP3036518B1 (de) | 2018-10-10 |
| DE102013216450A1 (de) | 2015-02-26 |
| JP2019066489A (ja) | 2019-04-25 |
| WO2015024831A1 (de) | 2015-02-26 |
| JP2016528509A (ja) | 2016-09-15 |
| CN105531573A (zh) | 2016-04-27 |
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